Physics Questions Practice Question and Answer
8 Q: The capacity of parallel plate condenser is dependent on the
1158 063c8e9831c47ef334be0ee88
63c8e9831c47ef334be0ee88- 1The separation between the platesfalse
- 2The metal used for the constructiontrue
- 3The thickness of the platefalse
- 4The potential applied across the platesfalse
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Answer : 2. "The metal used for the construction"
Explanation :
Therefore, the capacity of a parallel plate capacitor directly depends on the relative permittivity of dielectric material, the permittivity of space, the area of plates, and is inversely dependent on the separation between the plates.
Q: What type of energy is used to perform bodily functions?
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60b4b0f6517f2874d53f51b2- 1electric energyfalse
- 2Solar energyfalse
- 3muscle energytrue
- 4Chemical energyfalse
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Answer : 3. "muscle energy"
Q: A 40kVA transformer has core loss of 400 W & full load copper loss of 800 W. The proportion of full load at maximum efficiency is -
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6304af8620c0656a1d925419- 150%false
- 262.3%false
- 370.7%true
- 4100%false
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Answer : 3. "70.7%"
Q: What is the correct order of radiations in descending order of frequencies?
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64b52707efb5ba16688213e1- 1Infrared > Microwaves > Radio waves > X-raysfalse
- 2Radio waves > X-rays > Microwaves > Infraredfalse
- 3X-rays > Infrared > Microwaves > Radio wavestrue
- 4Infrared > Microwaves > X-rays > Radio wavesfalse
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Answer : 3. "X-rays > Infrared > Microwaves > Radio waves"
Explanation :
The correct order of radiations is in descending order of frequencies.
X-rays > Infrared > Microwaves > Radio waves
Q: Which of the following is the best conductor of heat?
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616559a93d260361529affd0- 1Leatherfalse
- 2Benzenefalse
- 3Mercurytrue
- 4Waterfalse
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Answer : 3. "Mercury "
Q: What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
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63c8e053bdbddb32fda05b2a- 1Kg.s-1true
- 2Kg.m.s-1false
- 3Kg.sfalse
- 4Kg.m.s-2false
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Answer : 1. "Kg.s-1"
Explanation :
The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in. kgs−1.
Q: The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______.
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641974a1b34a0b67fcf4a8bf- 148 Jfalse
- 212 Jfalse
- 336 Jfalse
- 424 Jtrue
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Answer : 4. "24 J"
Q: A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is
1058 063c8dfd58731ac33279e451b
63c8dfd58731ac33279e451b- 1Six times per revolutionfalse
- 2Four times per revolutionfalse
- 3Twice per revolutiontrue
- 4Once per revolutionfalse
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